allow compiling without 32x and sms code
[libpicofe.git] / pandora / emu.c
CommitLineData
93c18cb4 1// (c) Copyright 2006-2009 notaz, All rights reserved.\r
492d353a 2// Free for non-commercial use.\r
3\r
4// For commercial use, separate licencing terms must be obtained.\r
5\r
6#include <stdio.h>\r
b188c2b6 7#include <unistd.h>\r
492d353a 8\r
492d353a 9#include "../common/emu.h"\r
7fd581f4 10#include "../common/menu.h"\r
d2f29611 11#include "../common/plat.h"\r
12#include "../common/arm_utils.h"\r
b3972d82 13#include "../linux/sndout_oss.h"\r
b188c2b6 14#include "../linux/fbdev.h"\r
de9b1274 15#include "asm_utils.h"\r
d2f29611 16#include "version.h"\r
492d353a 17\r
f11bad75 18#include <pico/pico_int.h>\r
492d353a 19\r
492d353a 20\r
492d353a 21static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
d2f29611 22static unsigned char temp_frame[g_screen_width * g_screen_height * 2];\r
23unsigned char *PicoDraw2FB = temp_frame;\r
0c9ae592 24const char *renderer_names[] = { NULL };\r
25const char *renderer_names32x[] = { NULL };\r
f6eaae4f 26char cpu_clk_name[] = "Max CPU clock";\r
27\r
28enum {\r
29 SCALE_1x1,\r
30 SCALE_2x2_3x2,\r
31 SCALE_2x2_2x2,\r
32};\r
492d353a 33\r
f6eaae4f 34static int get_cpu_clock(void)\r
35{\r
36 FILE *f;\r
37 int ret = 0;\r
38 f = fopen("/proc/pandora/cpu_mhz_max", "r");\r
39 if (f) {\r
40 fscanf(f, "%d", &ret);\r
41 fclose(f);\r
42 }\r
43 return ret;\r
44}\r
492d353a 45\r
93c18cb4 46void pemu_prep_defconfig(void)\r
492d353a 47{\r
d2f29611 48 // XXX: move elsewhere\r
49 g_menubg_ptr = temp_frame;\r
b188c2b6 50\r
51 defaultConfig.EmuOpt |= EOPT_VSYNC;\r
f6eaae4f 52 defaultConfig.scaling = SCALE_2x2_3x2;\r
492d353a 53}\r
54\r
d2f29611 55void pemu_validate_config(void)\r
492d353a 56{\r
f6eaae4f 57 currentConfig.CPUclock = get_cpu_clock();\r
492d353a 58}\r
59\r
d2f29611 60// FIXME: cleanup\r
046c4540 61static void osd_text(int x, int y, const char *text)\r
492d353a 62{\r
63 int len = strlen(text)*8;\r
64\r
662e622b 65 if (0) {\r
492d353a 66 int *p, i, h;\r
67 x &= ~3; // align x\r
68 len = (len+3) >> 2;\r
69 for (h = 0; h < 8; h++) {\r
7fd581f4 70 p = (int *) ((unsigned char *) g_screen_ptr+x+g_screen_width*(y+h));\r
492d353a 71 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
72 }\r
b7911801 73 emu_text_out8(x, y, text);\r
492d353a 74 } else {\r
75 int *p, i, h;\r
76 x &= ~1; // align x\r
77 len++;\r
78 for (h = 0; h < 16; h++) {\r
7fd581f4 79 p = (int *) ((unsigned short *) g_screen_ptr+x+g_screen_width*(y+h));\r
de9b1274 80 for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;\r
492d353a 81 }\r
b7911801 82 text_out16(x, y, text);\r
492d353a 83 }\r
84}\r
85\r
86static void draw_cd_leds(void)\r
87{\r
88// static\r
89 int old_reg;\r
90// if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
91 old_reg = Pico_mcd->s68k_regs[0];\r
92\r
662e622b 93 if (0) {\r
492d353a 94 // 8-bit modes\r
95 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
96 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
7fd581f4 97 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+ 4) =\r
98 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+ 4) =\r
99 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+ 4) = col_g;\r
100 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+12) =\r
101 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+12) =\r
102 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+12) = col_r;\r
492d353a 103 } else {\r
104 // 16-bit modes\r
7fd581f4 105 unsigned int *p = (unsigned int *)((short *)g_screen_ptr + g_screen_width*2+4);\r
492d353a 106 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
107 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
e31266dd 108 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;\r
109 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;\r
492d353a 110 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
111 }\r
112}\r
113\r
f6eaae4f 114static int emuscan_1x1(unsigned int num)\r
de9b1274 115{\r
7fd581f4 116 DrawLineDest = (unsigned short *)g_screen_ptr + num*800 + 800/2 - 320/2;\r
de9b1274 117 //int w = (Pico.video.reg[12]&1) ? 320 : 256;\r
7fd581f4 118 //DrawLineDest = (unsigned short *)g_screen_ptr + num*w;\r
de9b1274 119\r
120 return 0;\r
121}\r
122\r
f6eaae4f 123#define MAKE_EMUSCAN(name_, clut_name_, offs_, len_) \\r
124static int name_(unsigned int num) \\r
125{ \\r
126 unsigned char *ps = HighCol+8; \\r
127 unsigned short *pd, *pal = HighPal; \\r
128 int sh = Pico.video.reg[0xC] & 8; \\r
129 int mask = 0xff; \\r
130 \\r
131 pd = (unsigned short *)g_screen_ptr + num*800*2 + offs_;\\r
132 \\r
133 if (Pico.m.dirtyPal) \\r
134 PicoDoHighPal555(sh); \\r
135 \\r
136 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI)) \\r
137 mask = 0x3f; /* upper bits are priority stuff */\\r
138 \\r
139 clut_line##clut_name_(pd, ps, pal, (mask<<16) | len_); \\r
140 \\r
141 return 0; \\r
492d353a 142}\r
143\r
f6eaae4f 144MAKE_EMUSCAN(emuscan_2x2_40, 2x2, 800/2 - 320*2/2, 320)\r
145MAKE_EMUSCAN(emuscan_2x2_32, 2x2, 800/2 - 256*2/2, 256)\r
146MAKE_EMUSCAN(emuscan_3x2_32, 3x2, 800/2 - 256*3/2, 256)\r
147\r
148#if 0 /* FIXME */\r
b188c2b6 149static int EmuScanEnd16_32x(unsigned int num)\r
150{\r
151 unsigned int *ps;\r
152 unsigned int *pd;\r
153 int len;\r
154\r
155 ps = (unsigned int *)temp_frame;\r
156 pd = (unsigned int *)g_screen_ptr + (num*800*2 + 800/2 - 320*2/2) / 2;\r
157\r
158 for (len = 320/2; len > 0; len--, ps++) {\r
159 unsigned int p, p1;\r
160 p1 = *ps;\r
161 p = p1 << 16;\r
162 p |= p >> 16;\r
163 *pd = pd[800/2] = p;\r
164 pd++;\r
165\r
166 p = p1 >> 16;\r
167 p |= p << 16;\r
168 *pd = pd[800/2] = p;\r
169 pd++;\r
170 }\r
171\r
172 return 0;\r
173}\r
f6eaae4f 174#endif\r
de9b1274 175\r
b188c2b6 176void pemu_finalize_frame(const char *fps, const char *notice)\r
492d353a 177{\r
d2f29611 178 if (notice || (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {\r
179 if (notice)\r
b188c2b6 180 osd_text(4, 464, notice);\r
d2f29611 181 if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r
b188c2b6 182 osd_text(640, 464, fps);\r
492d353a 183 }\r
d2f29611 184 if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))\r
492d353a 185 draw_cd_leds();\r
d2f29611 186}\r
492d353a 187\r
662e622b 188void plat_video_toggle_renderer(int change, int is_menu)\r
d2f29611 189{\r
190 // this will auto-select SMS/32X renderers\r
662e622b 191 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
492d353a 192}\r
193\r
d2f29611 194void plat_video_menu_enter(int is_rom_loaded)\r
195{\r
196}\r
492d353a 197\r
d2f29611 198void plat_video_menu_begin(void)\r
492d353a 199{\r
d2f29611 200 memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);\r
492d353a 201}\r
202\r
d2f29611 203void plat_video_menu_end(void)\r
204{\r
b188c2b6 205 plat_video_flip();\r
d2f29611 206}\r
492d353a 207\r
d2f29611 208void plat_status_msg_clear(void)\r
492d353a 209{\r
b188c2b6 210 int s = g_screen_width * g_screen_height * 2;\r
211 int l = g_screen_width * 16 * 2;\r
212 int i;\r
213\r
214 for (i = 0; i < fbdev_buffer_count; i++)\r
215 memset32((int *)((char *)fbdev_buffers[i] + s - l), 0, l / 4);\r
492d353a 216}\r
217\r
d2f29611 218void plat_status_msg_busy_next(const char *msg)\r
219{\r
220 plat_status_msg_clear();\r
b188c2b6 221 pemu_finalize_frame("", msg);\r
222 plat_video_flip();\r
d2f29611 223 emu_status_msg("");\r
224 reset_timing = 1;\r
225}\r
492d353a 226\r
d2f29611 227void plat_status_msg_busy_first(const char *msg)\r
228{\r
229// memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
230 plat_status_msg_busy_next(msg);\r
231}\r
232\r
233void plat_update_volume(int has_changed, int is_up)\r
492d353a 234{\r
235 static int prev_frame = 0, wait_frames = 0;\r
236 int vol = currentConfig.volume;\r
237\r
238 if (has_changed)\r
239 {\r
d2f29611 240 if (is_up) {\r
241 if (vol < 99) vol++;\r
242 } else {\r
243 if (vol > 0) vol--;\r
492d353a 244 }\r
d2f29611 245 wait_frames = 0;\r
246 sndout_oss_setvol(vol, vol);\r
247 currentConfig.volume = vol;\r
248 emu_status_msg("VOL: %02i", vol);\r
492d353a 249 prev_frame = Pico.m.frame_count;\r
250 }\r
492d353a 251}\r
252\r
93c18cb4 253void pemu_forced_frame(int opts)\r
492d353a 254{\r
255 int po_old = PicoOpt;\r
492d353a 256\r
257 PicoOpt &= ~0x10;\r
258 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
492d353a 259\r
492d353a 260 Pico.m.dirtyPal = 1;\r
261 PicoFrameDrawOnly();\r
262\r
492d353a 263 PicoOpt = po_old;\r
492d353a 264}\r
265\r
d2f29611 266static void updateSound(int len)\r
492d353a 267{\r
b188c2b6 268 unsigned int t;\r
269\r
d2f29611 270 len <<= 1;\r
271 if (PicoOpt & POPT_EN_STEREO)\r
272 len <<= 1;\r
492d353a 273\r
b188c2b6 274 // sndout_oss_can_write() not reliable..\r
d2f29611 275 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))\r
276 return;\r
492d353a 277\r
d2f29611 278 /* avoid writing audio when lagging behind to prevent audio lag */\r
b188c2b6 279 if (PicoSkipFrame == 2)\r
280 return;\r
281\r
282 t = plat_get_ticks_ms();\r
283 sndout_oss_write(PsndOut, len);\r
284 t = plat_get_ticks_ms() - t;\r
285 if (t > 1)\r
286 printf("audio lag %u\n", t);\r
492d353a 287}\r
288\r
93c18cb4 289void pemu_sound_start(void)\r
fce20e73 290{\r
fce20e73 291 int target_fps = Pico.m.pal ? 50 : 60;\r
292\r
293 PsndOut = NULL;\r
294\r
b188c2b6 295 if (currentConfig.EmuOpt & EOPT_EN_SOUND)\r
fce20e73 296 {\r
b188c2b6 297 int snd_excess_add, frame_samples;\r
298 int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;\r
299\r
300 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
301\r
302 frame_samples = PsndLen;\r
303 snd_excess_add = ((PsndRate - PsndLen * target_fps)<<16) / target_fps;\r
304 if (snd_excess_add != 0)\r
305 frame_samples++;\r
fce20e73 306\r
fce20e73 307 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
b188c2b6 308 PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);\r
309 sndout_oss_start(PsndRate, frame_samples * 2, is_stereo);\r
310 //sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
fce20e73 311 PicoWriteSound = updateSound;\r
d2f29611 312 plat_update_volume(0, 0);\r
fce20e73 313 memset(sndBuffer, 0, sizeof(sndBuffer));\r
314 PsndOut = sndBuffer;\r
fce20e73 315 }\r
316}\r
317\r
93c18cb4 318void pemu_sound_stop(void)\r
fce20e73 319{\r
b188c2b6 320 sndout_oss_stop();\r
fce20e73 321}\r
322\r
93c18cb4 323void pemu_sound_wait(void)\r
fce20e73 324{\r
325 // don't need to do anything, writes will block by themselves\r
326}\r
492d353a 327\r
d2f29611 328void plat_debug_cat(char *str)\r
492d353a 329{\r
d2f29611 330}\r
492d353a 331\r
d2f29611 332void emu_video_mode_change(int start_line, int line_count, int is_32cols)\r
333{\r
b188c2b6 334 int i;\r
492d353a 335\r
d2f29611 336 // clear whole screen in all buffers\r
b188c2b6 337 for (i = 0; i < fbdev_buffer_count; i++)\r
338 memset32(fbdev_buffers[i], 0, g_screen_width * g_screen_height * 2 / 4);\r
492d353a 339\r
f6eaae4f 340 PicoScanBegin = NULL;\r
341 PicoScanEnd = NULL;\r
342\r
343#if 0\r
b188c2b6 344 if (PicoAHW & PAHW_32X) {\r
f6eaae4f 345 /* FIXME */\r
b188c2b6 346 DrawLineDest = (unsigned short *)temp_frame;\r
662e622b 347 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
b188c2b6 348 PicoScanEnd = EmuScanEnd16_32x;\r
f6eaae4f 349 } else\r
492d353a 350#endif\r
f6eaae4f 351 {\r
352 switch (currentConfig.scaling) {\r
353 case SCALE_1x1:\r
354 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
355 PicoScanBegin = emuscan_1x1;\r
356 break;\r
357 case SCALE_2x2_3x2:\r
358 PicoDrawSetOutFormat(PDF_NONE, 0);\r
359 PicoScanEnd = is_32cols ? emuscan_3x2_32 : emuscan_2x2_40;\r
360 break;\r
361 case SCALE_2x2_2x2:\r
362 PicoDrawSetOutFormat(PDF_NONE, 0);\r
363 PicoScanEnd = is_32cols ? emuscan_2x2_32 : emuscan_2x2_40;\r
364 break;\r
365 }\r
366 }\r
b188c2b6 367}\r
492d353a 368\r
b188c2b6 369void pemu_loop_prep(void)\r
370{\r
371 emu_video_mode_change(0, 0, 0);\r
f6eaae4f 372 \r
373 if (currentConfig.CPUclock != get_cpu_clock()) {\r
374 FILE *f = fopen("/proc/pandora/cpu_mhz_max", "w");\r
375 if (f != NULL) {\r
376 fprintf(f, "%d\n", currentConfig.CPUclock);\r
377 fclose(f);\r
378 }\r
379 }\r
380\r
d2f29611 381 pemu_sound_start();\r
382}\r
492d353a 383\r
d2f29611 384void pemu_loop_end(void)\r
385{\r
386 int po_old = PicoOpt;\r
387 int eo_old = currentConfig.EmuOpt;\r
492d353a 388\r
d2f29611 389 pemu_sound_stop();\r
390 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
492d353a 391\r
d2f29611 392 /* do one more frame for menu bg */\r
393 PicoOpt &= ~POPT_ALT_RENDERER;\r
394 PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;\r
395 currentConfig.EmuOpt |= EOPT_16BPP;\r
492d353a 396\r
662e622b 397 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
d2f29611 398 Pico.m.dirtyPal = 1;\r
399 PicoFrame();\r
492d353a 400\r
d2f29611 401 PicoOpt = po_old;\r
402 currentConfig.EmuOpt = eo_old;\r
403}\r
492d353a 404\r
d2f29611 405void plat_wait_till_us(unsigned int us_to)\r
406{\r
407 unsigned int now;\r
b188c2b6 408 signed int diff;\r
492d353a 409\r
d2f29611 410 now = plat_get_ticks_us();\r
492d353a 411\r
f6eaae4f 412 // XXX: need to check NOHZ\r
b188c2b6 413 diff = (signed int)(us_to - now);\r
414 if (diff > 10000) {\r
415 //printf("sleep %d\n", us_to - now);\r
416 usleep(diff * 15 / 16);\r
417 now = plat_get_ticks_us();\r
418 //printf(" wake %d\n", (signed)(us_to - now));\r
419 }\r
420/*\r
421 while ((signed int)(us_to - now) > 512) {\r
d2f29611 422 spend_cycles(1024);\r
423 now = plat_get_ticks_us();\r
492d353a 424 }\r
b188c2b6 425*/\r
492d353a 426}\r
427\r
d2f29611 428const char *plat_get_credits(void)\r
429{\r
0c9ae592 430 return "PicoDrive v" VERSION " (c) notaz, 2006-2010\n\n\n"\r
d2f29611 431 "Credits:\n"\r
432 "fDave: Cyclone 68000 core,\n"\r
433 " base code of PicoDrive\n"\r
434 "Reesy & FluBBa: DrZ80 core\n"\r
435 "MAME devs: YM2612 and SN76496 cores\n"\r
f6eaae4f 436 "Pandora team: Pandora\n"\r
437 "Inder: menu bg\n"\r
d2f29611 438 "\n"\r
439 "special thanks (for docs, ideas):\n"\r
440 " Charles MacDonald, Haze,\n"\r
441 " Stephane Dallongeville,\n"\r
442 " Lordus, Exophase, Rokas,\n"\r
443 " Nemesis, Tasco Deluxe";\r
444}\r